Create InjectSession & PersistSession modules; update session model

app/models/http/Session.model.ts

@@ -4,13 +4,13 @@ import {SessionModel} from '../../../lib/src/module.ts'
 
 export default class Session extends SessionModel {
     protected static table = 'sessions'
-    protected static key = 'session_id'
+    protected static key = 'session_key'
 
     protected static readonly CREATED_AT = 'start_time'
     protected static readonly UPDATED_AT = null // No updated at
 
-    @Field(Type.int)
-    protected session_id!: number
+    @Field(Type.varchar)
+    protected session_key!: string
 
     @Field(Type.int)
     protected user_id?: number